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3rd International Conference on Mobile Systems, Applications, and Services — Abstract
Pp. 261–274 of the Proceedings
Turducken: Hierarchical Power Management for Mobile Devices
Jacob Sorber, Nilanjan Banerjee, and Mark D. Corner, University of Massachusetts, Amherst; Sami Rollins, Mount Holyoke College
Abstract
Maintaining optimal consistency in a distributed system requires that
nodes be always-on to synchronize information. Unfortunately, mobile
devices such as laptops do not have adequate battery capacity for
constant processing and communication. Even by powering off
unnecessary components, such as the screen and disk, current laptops
only have a lifetime of a few hours. Although PDAs and sensors are
similarly limited in lifetime, a PDA's power requirement is an
order-of-magnitude smaller than a laptop's, and a sensor's is an
order-of-magnitude smaller than a PDA's. By combining these diverse
platforms into a single integrated laptop, we can reduce the power
cost of always-on operation. This paper presents the design,
implementation, and evaluation of Turducken, a Hierarchical Power
Management architecture for mobile systems. We focus on a particular
instantiation of HPM, which provides high levels of consistency in a
laptop by integrating two additional low power processors. We
demonstrate that a Turducken system can provide battery lifetimes of
up to ten times that of a standard laptop for always-on
operation and three times for a system that periodically
sleeps.
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